One of
the most popular theories proposed for the purpose of the glyphs is that
they are solstice markers or some kind of ancient calendar.

While there
are clear indications that the ancient inhabitants of the southwest were
accomplished astronomers,
including the much publicized discoveries in Chaco
Canyon and in Central
Texas, the research team does
not feel that this is a valid theory as to their intended use.

Although
the team does not rule out the possibility that the glyphs may have some
calendarical significance, (perhaps lunar instead of solar),
current data would suggest this theory appears is invalid.

The Earth
is actually nearer the sun in January than it is in June, [by three million
miles] , and our
Earth leans slightly on its axis, 23 degrees and 27 minutes off
perpendicular to the plane of it's orbit.

As
the Earth orbits the Sun at this odd angle, the Sun appears to
"move" northward or southward in the sky.

More
precisely, it is the point in Earth's orbit around the sun at which
this apparent movement stops ... and changes direction.

This is
an important fundamental principal because the apparent movement of the
Sunis
relative to your position on the surface of the earth. However,
this relative movement is negligible if your position on the earth, or
degrees Latitude from the equator,
does not change.

These 120 glyphs have been found over a 5,000 square mile area, and their latitude
never varies more than 20 miles from
37°00'04" latitude, which for the purposes refuting the solstice theory as the primary function of the marks,
is a
negligible deviation.